The best Spreadsheet alternative to Proton Sheets is LibreOffice - Calc, which is both free and Open Source. If that doesn't suit you, our users have ranked more than 50 alternatives to Proton Sheets and many of them are Spreadsheet Apps so hopefully you can find a suitable replacement. Other interesting Spreadsheet App alternatives to Proton Sheets are Microsoft Excel, Google Sheets, NocoDB and Collabora Office Classic.
Open-source tool merges spreadsheets, databases, and app-building. Offers a spreadsheet interface, Python engines, real-time collaboration, and cell-level security controls. Choose cloud or self-hosting to maintain data ownership, free team account offers available.
LibreOffice Calc is the spreadsheet program you've always needed. A fork of OpenOffice.org Calc, professional data miners and number crunchers will appreciate its comprehensive range of advanced functions.
LibreOffice - Calc is the most popular Windows, Mac & Linux alternative to Proton Sheets.
LibreOffice - Calc is the most popular Open Source & free alternative to Proton Sheets.
Comprehensive spreadsheet tool offering advanced data management with features like pivot tables, data visualization, and customizable charts for professional use in creating detailed reports and analyses.
Microsoft Excel is the most popular Android, iPhone, iPad & Android Tablet alternative to Proton Sheets.
Microsoft Excel is the most popular commercial alternative to Proton Sheets.
Cloud spreadsheet app featuring real-time editing, support for Excel and CSV import/export, chart building, formula functionality, integrated chat, access controls, cloud syncing, access via web and mobile platforms, scripting, embedding, templates, and Drive integration.
Google Sheets is the most popular Web-based alternative to Proton Sheets.
NocoDB is a feature-rich, open source #NoCode platform that turns any database into a smart spreadsheet similar to Airtable.
NocoDB is the most popular Self-Hosted alternative to Proton Sheets.
On-premise office suite featuring advanced word processing, spreadsheets, and presentations, unmatched compatibility with 100+ formats, OOXML support, six-month updates, enterprise hardening, Visio and Publisher import, PDF export, and support for 50+ languages.
Collabora Office Classic is the most popular SaaS alternative to Proton Sheets.
Open-source tool merges spreadsheets, databases, and app-building. Offers a spreadsheet interface, Python engines, real-time collaboration, and cell-level security controls. Choose cloud or self-hosting to maintain data ownership, free team account offers available.
Baserow is the secure, open-source platform for building databases, applications, automations, and AI agents — all without code. Trusted by over 150,000 users, Baserow delivers enterprise-grade security with GDPR, HIPAA, and SOC 2 Type II compliance, plus cloud and self-hosted...
The democratization of spreadsheets. Empowering everyone with advanced, open-source spreadsheet solutions.
EtherCalc is a web spreadsheet. Your data is saved on the web, and people can edit the same document at the same time. Everybody's changes are instantly reflected on all screens. Work together on inventories, survey forms, list management, brainstorming sessions and more!
Create gorgeous spreadsheets with Numbers for Mac. Get started with one of over 30 Apple-designed templates for your home budget, checklist, invoice, mortgage calculator, and more. Add tables, charts, text, and images anywhere on the free-form canvas.
Combines robust spreadsheets with built-in integrations from business apps, enabling workflow automation. Interactive sharing enhances tasks across sectors like Sales, Marketing, and Operations, while data enrichment and API integration refine tools. Creative elements and real-time collaboration foster innovation.
The Gnumeric spreadsheet is part of the GNOME desktop environment: a project to create a free, user friendly desktop environment.
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